package com.ruoyi.iot.dataprocessing.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.EnableAsync;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;

import java.util.concurrent.Executor;
import java.util.concurrent.ThreadPoolExecutor;

@Configuration
@EnableAsync
public class ExecutorConfig {
    @Bean(name = "asyncServiceExecutor")
    public Executor asyncServiceExecutor(){
        ThreadPoolTaskExecutor threadPoolTaskExecutor = new ThreadPoolTaskExecutor();
        int coreNum = Runtime.getRuntime().availableProcessors();
        threadPoolTaskExecutor.setCorePoolSize(coreNum*2+1);
        threadPoolTaskExecutor.setMaxPoolSize(coreNum*4+1);
        threadPoolTaskExecutor.setQueueCapacity(999);
        threadPoolTaskExecutor.setKeepAliveSeconds(3);
        threadPoolTaskExecutor.setThreadNamePrefix("async-service-");
        // rejection-policy：当pool已经达到max size的时候，如何处理新任务
        // CALLER_RUNS：不在新线程中执行任务，而是由调用者所在的线程来执行
        threadPoolTaskExecutor.setRejectedExecutionHandler(new ThreadPoolExecutor.AbortPolicy());
        //加载
        threadPoolTaskExecutor.initialize();
        return threadPoolTaskExecutor;
    }
}